Cukikamata is in fact a copper mine in Chile. Its copper production is the highest in the world, but it is not the largest. The bottom of this pit is located at incredible 2,788 feet.
Udachnaya pipe, Russia
Udacnaja Pajp a diamond mine in Russia. The owners of the mine planed to close it by 2010 in order to proceed with underground excavations. The mine was discovered in 1955 at a depth of about 1,968 feet.
Sinking hole, Guatemala
In 2007, 311 feet deep hole swallowed several homes in a small town in Guatemala and made hundreds of people evacuate. These holes appear after heavy rains.
Diavik Mine, Canada
Diavik mine in the northwest of Canada. The mine was opened in 2003 and produces 8 million carats and about 3,527 pounds of diamonds each year.
Mirni -Diamond Mine, Siberia
This pit is 1,755 feet deep and has a diameter of 3,937 feet. It was the first and largest diamond mine in the former Soviet Union and now it is abandoned. While it was in function, one truck needed two hours to get to the top.
Great Blue Hole, Belize
Great blue hole is an underwater hole near the coast of Belize. The hole has a diameter of 984 feet, and it is 400 feet deep. It was formed from limestone during the last ice age.
Bingham mine, Utah
Bingham is a copper mine in the mountains Okuir in Utah. Mine is 0, 6 miles deep, with 2, 5 miles in diameter. It is the largest human excavation in the world
Monticelo Dam, California
Monticelo is a dam in Napa County, California. It is known for its large suction channels which power the dam’s generators. 302,000 galons of water runs through the canal every second
Kimberley diamond mine, South Africa
Kimberley Diamond Mine (also known as the Great Hole) holds the (disputed) title for the largest hand-dug hole in the world. From 1886th to 1914, 50,000 miners dug the hole with picks and shovels and found 6,000 pounds of diamonds. There is a debate that this place should be protected as a World Heritage Site.
"Gates of Hell", Turkmenistan
In 1971, geologists have discovered a massive underground gas reserves in this place. When the excavations began, a drill touched a place filled with gas and the hole caved creating this huge hole. In order to prevent swelling of the poison gas, it was set on fire and it is burning as we speak.